561197 has 12 divisors (see below), whose sum is σ = 703836. Its totient is φ = 443520.

The previous prime is 561191. The next prime is 561199. The reversal of 561197 is 791165.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 90601 + 470596 = 301^2 + 686^2 .

It is not a de Polignac number, because 561197 - 2⁴ = 561181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197 + ... + 1077.

It is an arithmetic number, because the mean of its divisors is an integer number (58653).

2⁵⁶¹¹⁹⁷ is an apocalyptic number.

It is an amenable number.

561197 is a deficient number, since it is larger than the sum of its proper divisors (142639).

561197 is a wasteful number, since it uses less digits than its factorization.

561197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908 (or 901 counting only the distinct ones).

The product of its digits is 1890, while the sum is 29.

The square root of 561197 is about 749.1308296953. The cubic root of 561197 is about 82.4843925174.

The spelling of 561197 in words is "five hundred sixty-one thousand, one hundred ninety-seven".